The central duty under the Act is the obligation to report reportable deaths (section 12). Medical practitioners and custodial authorities have particular responsibilities, but any person with reasonable grounds to believe a reportable death has not been reported must act. Once a death is reported, a coroner has a duty to investigate if it appears to be or may be a reportable death (section 14(2)). The coroner must hold an inquest if the deceased was a person held in care or custody immediately before death, if death was caused or contributed to by injuries sustained while in custody, or if the identity of the deceased is unknown (section 15(1)). The coroner may also hold an inquest if she or he suspects unlawful killing (section 15(1A)) or in any other case as the coroner thinks fit (section 15(2)). A coroner who decides not to hold an inquest (where there is jurisdiction to do so) must record the decision in writing with reasons, notify the senior next of kin, and may notify any other person (section 16(1)). The senior next of kin has a right to apply to the Supreme Court for an order that an inquest be held (section 16(2)). The Court may make such an order if it thinks fit (section 16(3)).
The coroner has extensive investigation powers. Under section 19, the coroner may enter and inspect a place (with reasonable force if necessary), take copies of documents, and take possession of things relevant to the investigation. These powers may be delegated in writing to a police officer subject to specified periods (section 19(2)). The coroner may direct a medical practitioner to perform an autopsy (section 20(1)), and may order exhumation of a body if reasonably believed necessary (section 24(1)). However, the senior next of kin must be given at least 48 hours notice before exhumation unless impracticable (section 24(2)), and if they object, the body must not be exhumed for a further 48 hours, during which they may apply to the Supreme Court (section 24(3),(4)). Similar protections apply to autopsy objections (section 23) and refusal to order an autopsy (section 21).
At an inquest, the coroner is not bound by the rules of evidence (section 39) and may conduct the inquest as she or he reasonably thinks fit. The coroner may summons witnesses, order them to give evidence on oath, appoint a person to assist, and in the case of a death in custody must appoint a person to assist (section 41). The coroner must conduct inquests in open court unless orders exclusion for administration of justice, national security, or personal security (section 42(1),(2)). An exclusion order must be placed conspicuously (section 42(3)). The coroner must also order removal of a person who disobeys an exclusion order and may imprison that person for up to two hours if continued disobedience is likely (section 42(4)). Publication restrictions may be imposed by the coroner if necessary to protect fair trial, administration of justice, national security, personal security, or to prevent disclosure of sensitive personal matters including the name of the deceased at the request of senior next of kin (section 43(1)). Breach carries up to 85 penalty units or two years imprisonment (section 43(2)).
The coroner must make findings: for a death, the identity, time and place, cause, particulars for registration, and any relevant circumstances (section 34(1)(a)); for a disaster, the cause, origin, and circumstances (section 34(1)(b)). The coroner may comment on public health, safety, or administration of justice connected with the death or disaster (section 34(2)). Importantly, the coroner may not include a statement that a person is or may be guilty of an offence (section 34(3)). The coroner may report to the Attorney-General and make recommendations (section 35(1),(2)), and if an offence may have been committed, may report to the Commissioner of Police and the Director of Public Prosecutions (section 35(3)).
The Act also provides a right to apply to the Supreme Court for an order that some or all findings of an inquest are void (section 44(1)). The Court may declare findings void and order a new inquest or re-opening if satisfied of fraud, failure to consider evidence, irregularity, insufficiency of inquiry, mistake in the record, new facts or evidence, or findings against the weight of evidence (section 44(2),(3)). Additionally, a coroner may on her or his own initiative re-open an inquest if new facts or evidence make it necessary or desirable (section 44A(2)), and may also hold an inquest after a previous decision not to hold one if new facts or evidence emerge (section 44A(1)).